package servlet;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import beans.Coursebean;
import beans.Teacherbean;
import beans.Userbean;
import dao.Course;
import dao.Teacher;
import dao.User;

public class AdminLoginServlet extends HttpServlet {

    /**
     * The doGet method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to get.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doGet(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {

	this.doPost(request, response);
    }

    /**
     * The doPost method of the servlet. <br>
     *
     * This method is called when a form has its tag value method equals to post.
     * 
     * @param request the request send by the client to the server
     * @param response the response send by the server to the client
     * @throws ServletException if an error occurred
     * @throws IOException if an error occurred
     */
    public void doPost(HttpServletRequest request, HttpServletResponse response)
	    throws ServletException, IOException {

	String name = request.getParameter("username").trim();
	String password = request.getParameter("passwd").trim();
	if ((name != null && !"".equals(name))
		&& (password != null && !"".equals(password))) {
	    Userbean userbean = new Userbean();
	    User user = userbean.veryfyUser(name, password);
	    if (user != null) {
		if (user.getUsertype() >= 4) {
		    request.getSession().setMaxInactiveInterval(14400);
		    request.getSession().setAttribute("user", user);
		    	if (user.getUsertype() == 4) {
			response.sendRedirect("../admin/admin.html");
		    }
		} else {
		    response.sendRedirect("../login.jsp?error=3");
		}
	    } else {
		response.sendRedirect("../login.jsp?error=1");
	    }
	} else {
	    response.sendRedirect("../login.jsp?error=2");
	}
    }

}
